General => Power Management => Topic started by: trazz on January 27, 2012, 02:19:52 pm

I have the Vera Lite with UI5.I have connected a Everspring AN158 light switch with Power measuring. The above is connected to our new dryer. I wanted to see how much power it uses during a "drying of clothes..".Anyhow to my question.

The dryer has run 4 times now and when I look at the historical Usage it tells me it has used: 5987 KWH ..

Is it just me or shouldn't it be 5,987 KWH or 5987 WH ? ..

when it is at maximum load it uses 800 Watt (I see this correctly in UI..) each dry process takes about 2 hours.. going from 400 - 800 Watts...

A typical dryer here in the US can draw up to 20 amps at 240V, or 4,800 Watts. If you do this for an hour, it's 4.8 KWh (Kilowatts*hours). Our laundry gets done in about 40 minutes for a load. Your numbers do look off by a factor of 1000.

So if your dryer runs 800 Watts (at 220v) Each load takes about 2 hours and you processed four loads, this should be:800w * 2 h / load * 4 loads = 6400 watt-hours or 6.4 kilowatt-hours (KWh). If your consumption varies from 400 to 800 watts, then the consumption of 5.987 KWh looks about right.

Here in the US we use commas to separate groups of three decimal places with commas and place decimal fractions behind the decimal point. My cousins in Germany do just the opposite. They use the periods to separate groups of three decimal places and the comma to separate the unit and the decimal fraction. Could it be the number was formatted 5,987 KWh for Europe?